532 CALIFORNIA ACADEMY OF SCIENCES. 



line; 3-5 with a stripe each side on dorsum not reaching 

 the apices of the segments, interrupted by the additional 

 transverse carina on 3, by the suture on 4, and to a greater 

 extent on 5 ; on each side of 7 a large oval spot. 



Superior appendages a little longer than 9, apical half 

 thickened, no inferior tooth but a row of about 7 denti- 

 cles on the lower surface of the third fourth. Inferior 

 appendage one-fifth to one-sixth shorter, subtriangular, 

 apex truncate, notched. 



Anterior lamina with margin entire. Hamule more 

 prominent than adjacent parts, simple, curved, apex 

 acute, not hooked. Genital lobe very short, least prom- 

 inent. 



Wings clear, a very slight trace of deep brown at base 

 of hind wings. Pterostigma black, membranule white or 

 somewhat gray. 



? Differs from male as follows : inferior branch of tar- 

 sal nails of second and third legs not quite as long as the 

 tip of the nail, femora of same legs without the teeth, ab- 

 domen of almost uniform width; appendages blackish, a 

 little longer than 10, straight, simple; vulva marked by a 

 shallow emargination at apex of sternum of 8 ; all the 

 wings with a dark brown streak in the subcostal space 

 from base half-way to the first antecubital, a similar streak 

 in the median space of the hind wings reaching half-way 

 to the cross -vein, front wings with apex yellowish from 

 about the level of the penultimate postcubital. 



S ? Front wings with 11-14 antecubitals, 7-8 postcu- 

 bitals, discoidal triangle free, internal triangle 2-celled 

 (3-celled in one wing only of 261?), two post-triangu- 

 lar rows. Hind wings with 8-10 antecubitals, 8-10 post- 

 cubitals, triangle free, its inner (basal) side a little nearer 

 the base of the wing than the arculus. 



Total length 5 38-39, ? 39-40. Abdomen 5 27-28, ? 



